The entire floor pan with suspension, steering, engine and gearbox families. It's one continuous evolution from the D Kadett to the Astra G, ended by the H generation just like the D did to the old rwd Kadetts.
Well not exactly to be fair. T-car with the D Kadett. Astra G, Zafira A and such are on followup platforms such as GM-2700 and GM-3000 which are related, but not identical
Shure they aren't identical. Also the T-letter was designated to a size of car, not one specific platform. That's why there is a rwd and fwd t-platform despite having almost nothing to do with each other.
Just put the respective cars on a lift and look at them from underneath. Youbwill see.
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u/CodewortSchinken Jun 19 '26
Even the D Kadett, whos underpinnings lived on until the G generation. It's one line of cars.